According to Bitcoin Obituaries, which counts every time bitcoin was declared dead, it has died 236 times so far.
https://99bitcoins.com/bitcoinobituaries/
Cryptos came to stay the same way internet came to stay. Even if bitcoin dies. other crypto will take its place, because for a crypto to kill another, it certainly offers a better protocol. And according to coinmarketcap, BTC only accounts for 34% of the total crypto market cap.
Last edited by Birimbau - on 20 January 2018